JÄGER ADwin-light-16 Handbuch Seite 149

ADwin
Beispiel
#Include ADwL16.inc
Rem SPI settings
#Define data_order
#Define mode 3
#Define bits 8
#Define clock 7
Init:
Rem Disable slave select via TTL high on pin DIGOUT-1
Set_Digout(0)
SPI_Enable(1)
SPI_Config(data_order, mode, bits, clock)
Par_1 = 10
Event:
SPI_Set_MOSI(Par_1)
Rem To select a slave you have to send the signal „Slave
Rem select" to the SPI slave. Connect a free DIO output to
Rem the slave SPI input and set the required TTL output level
Rem with the appropriate standard DIO instruction.
Rem Start slave select via TTL low on pin DIGOUT-1
Clear_Digout(0)
SPI_Start()
SPI_Wait()
Set_Digout(0)
Par_2 = SPI_Get_MISO()
ADwin-light-16 , Handbuch Version 3.5, November 2013
0 'MSB first
'CPOL = 1, CPHA = 1
'number of data bits
'clock rate: 78.125 kHz
'enable ADwin I/O Connector pins
'first data value
'set data value to be sent
'start data transfer
'wait until end of data transfer
'end slave select
'read received data value
SPI-Schnittstelle
SPI_Config
143